K-LAGAN

Java backend developer

In short

Java Backend Developer role at K-LAGAN, working on international intralogistics and warehouse automation software projects. The job involves developing backend services and REST APIs in Java/Spring Boot, integrating WMS/WCS systems, and working with Oracle/SQL databases, from an onsite office in Barcelona. Requires professional Java backend experience, Spring Framework, JUnit/Mockito testing, agile methodology familiarity, and professional English for international team collaboration.

About the Role
At K-LAGAN, we are looking to bring on a Java Backend Developer to take part in international software development projects for logistics and intralogistics automation systems. We are looking for someone with experience in Java, Spring Boot, and backend application development, who is familiar with WMS/WCS environments and wants to continue growing through technology projects related to warehouse management and automation.
Responsibilities
•Develop, test, and implement backend applications and services in Java.
•Take part in developing and integrating WMS/WCS solutions for automated logistics environments.
•Design and maintain REST APIs and integrations between systems.
•Work with relational databases, mainly Oracle and SQL.
•Identify and resolve incidents, errors, and performance issues.
•Develop unit and integration tests using JUnit and Mockito.
•Take part in code reviews and apply development, quality, and security best practices.
•Collaborate with international development, testing, and project management teams.
•Take part in installing, integrating, and commissioning the developed solutions.
Requirements
•Professional experience in backend development with Java.
•Knowledge of Java SE 17, Spring Framework, and Spring Boot.
•Experience developing and integrating REST APIs.
•Knowledge of WMS, WCS, or intralogistics systems.
•Experience with Oracle and SQL databases.
•Proficiency with Git, Gradle, IntelliJ IDEA and/or Eclipse.
•Experience with testing using JUnit and Mockito.
•Familiarity with agile methodologies (Scrum, Kanban) and tools such as Jira.
•Professional English to collaborate with international teams.
•Availability to travel according to project needs.
Nice to Have
•Experience with Docker, Kubernetes, or Microsoft Azure.
•Knowledge of frontend technologies such as JavaScript, Vue, Angular, or React.
•Additional experience with .NET/C#.
•Knowledge of French.
•Previous experience in warehouse automation projects, internal transport systems, or integration of logistics solutions.
Conditions
•Permanent contract and a stable project.
•Participation in international intralogistics technology projects.
•Ongoing support and professional development.
•Careers and Training Department.
•Team-building events, barbecues, tech coffees, and internal events.
•Special events: Summer Dinner, Christmas Dinner, and Solidarity Day.
•Day off on your birthday.
•Support for childcare, mileage, and language learning.

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